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bondterminal-x402

Query BondTerminal API using x402 keyless payments. No API key needed — pay $0.01 USDC per request on Base mainnet. Use when users ask for Argentine bond data, analytics, cashflows, history, riesgo país, or ISIN/ticker lookups (e.g. AL30, GD30, US040114HS26). Supports automatic 402 → payment → retry.

Install with Tessl CLI

npx tessl i github:NeverSight/skills_feed --skill bondterminal-x402
What are skills?

100

2.50x

Quality

100%

Does it follow best practices?

Impact

100%

2.50x

Average score across 6 eval scenarios

SKILL.md
Review
Evals

Discovery

100%

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

This is an excellent skill description that clearly defines a specialized niche (Argentine bond data via x402 payments), provides comprehensive trigger terms including domain-specific vocabulary ('riesgo país') and concrete examples (AL30, GD30), and explicitly states when to use it. The description is concise yet thorough, using proper third-person voice throughout.

DimensionReasoningScore

Specificity

Lists multiple concrete actions: 'Query BondTerminal API', 'pay $0.01 USDC per request', 'automatic 402 → payment → retry'. Specifies the domain (Argentine bond data) and technical details (Base mainnet, x402 keyless payments).

3 / 3

Completeness

Clearly answers both what (query BondTerminal API with x402 payments) and when (explicit 'Use when users ask for...' clause with comprehensive trigger scenarios including bond data, analytics, and specific ticker examples).

3 / 3

Trigger Term Quality

Excellent coverage of natural terms users would say: 'Argentine bond data', 'analytics', 'cashflows', 'history', 'riesgo país', 'ISIN/ticker lookups', and specific examples like 'AL30, GD30, US040114HS26'.

3 / 3

Distinctiveness Conflict Risk

Highly distinctive niche combining Argentine bonds, x402 payments, and specific tickers (AL30, GD30). Very unlikely to conflict with other skills due to the specialized domain and payment mechanism.

3 / 3

Total

12

/

12

Passed

Implementation

100%

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

This is an excellent skill file that efficiently teaches Claude how to interact with the BondTerminal API using x402 payments. It provides complete, executable code examples, clear workflow steps, and appropriate progressive disclosure through external references. The content respects Claude's intelligence while providing all necessary implementation details.

DimensionReasoningScore

Conciseness

The content is lean and efficient, avoiding explanations of concepts Claude already knows (like what APIs are or how HTTP works). Every section provides actionable information without padding.

3 / 3

Actionability

Provides fully executable JavaScript code with proper imports, complete function implementations, and copy-paste ready examples. The setup steps are concrete with specific npm packages and code snippets.

3 / 3

Workflow Clarity

The x402 flow is clearly sequenced (1-5 steps), setup has numbered steps, and the code includes error handling with a fallback mechanism for legacy headers. The quick test section provides validation checkpoints.

3 / 3

Progressive Disclosure

Well-structured with clear sections, appropriate use of tables for endpoint reference, and explicit references to external files (references/endpoints.md, references/signer-setup.md) for detailed content. Links to full docs provided.

3 / 3

Total

12

/

12

Passed

Validation

100%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation11 / 11 Passed

Validation for skill structure

No warnings or errors.

Reviewed

Table of Contents

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